A lil somethin somethin: You can find the details for this event on the announcement page here.
New! You’ll now automatically receive all Battle Pass rewards that you earn, even if you forget to claim them on time. At the end of the season, all unclaimed rewards will be credited to your account when you first log into the game. This new feature has already come into effect, which means that you’re guaranteed to receive your earned rewards in the current 13th Battle Pass Season, which ends on January 24th.